Sounds like a perfectly great idea! In Brazil school officials are putting electronic chips into the kids school uniforms. Why? So parents and school know their kids aren't late for school. These only detect when the kids come through the school gates. The parents get sent a text message with the time their child gets to school. They get sent another message if the child is late.
Several Georgia and Texas school districts use the same type of detection system. The school kids are required to carry their school ID and the kids are fully locatable when on school campus. Of course that's to know where they are in case of emergency. These devices are being put into school buses as well. It's all to keep "kids safe".
Or is it to brainwash the next generation into thinking it is normal to be tracked wherever you are? Are we as parents so paranoid about the whereabouts of our kids that we think the schools doing this is a good idea? It is not normal in a free society.